Anchor Pier For Manufactured Building

ABSTRACT

An anchor pier for supporting a manufactured building, in which the anchor pier includes having a shaft with a connector and a helical flight proximate a driving tip, with a brace member attached to the connector and to the manufactured building with a connector, to transfer loading between the manufactured building and the ground. A method of supporting a manufactured building is disclosed.

The present application is a continuation-in-part of co-pending U.S.non-provisional patent application Ser. No. 12/858,027, filed Aug. 17,2010, a continuation-in-part of co-pending U.S. non-provisional patentapplication Ser. No. 12/777,038, filed May 10, 2010, each incorporatedherein by reference and claims the benefit of U.S. Provisional PatentApplication Ser. No. 61/177,103, filed May 11, 2009.

TECHNICAL FIELD

The present invention relates to supports for manufactured buildings.More particularly, the present invention relates to an anchor pier tosupport manufactured buildings installed on a ground surface.

BACKGROUND OF THE INVENTION

Manufactured buildings, such as manufactured or mobile homes andoffices, are constructed and assembled at an initial manufacturingfacility, and then moved on wheels to the installation site. Themanufactured building typically includes long, longitudinal supportbeams underneath the building to support the floor of the building.During typical installation, a plurality of piers are placed between aground surface and the support beam to support the building on the site.The piers sit on or are attached to footings such as metal plates orpans, plastic plates, or concrete pads placed on the ground.

Different types of piers are known. One type of pier uses stacks ofblocks that sit on footings and transfer load from the support beam.Other piers use metal tubular members that connect between a ground panand the support beam.

Some foundation systems for manufactured buildings also resist lateraland longitudinal wind and/or seismic forces on the building. Thesefoundation systems typically use a ground pan and an elongated strutconnected at a lower end to the ground pan and at the upper end to asupport beam of the manufactured building. The elongated strut can beoriented parallel to a longitudinal axis of the support beam or extendlaterally from underneath one support beam to connect to the adjacentsupport beam of the manufactured buildings, or both. Such foundationsprovide resistance to wind and/or seismic forces in the lateral andlongitudinal directions.

Often the support beam is positioned inwardly of a perimeter of themanufactured building. The floor structure of the manufactured buildingincludes a plurality of joists that are positioned in spaced-apartrelation and transverse to a longitudinal axis of the support beams. Thejoists extend outwardly of the support beams to a perimeter wall of themanufactured building.

While the piers and foundation systems have been successful insupporting installed manufacturing buildings and resisting wind and/orseismic loads on installed manufactured buildings, there are drawbacksto these systems. Laterally extended portions of floor of themanufactured building may sag over time, for example, due to settlementof the ground under the piers of the manufactured building. Themanufactured building may become out of level. Further, frost heave canreduce holding and supporting capability of foundation members. Heave insoil occurs when the water in the ground freezes. The freezing waterexpands, and causes the ground to heave up or rise up or swell. Frostheave causes the foundation ground pans (or pads) to move. This movementis communicated to the house through the elongated struts between theground pan and the support beam, and may contribute to the housebecoming out of level. A manufactured building that is not level canresult in openings in the manufactured building becoming out of skew.This causes doors, such as in exterior doorways, to become skewed andnot open or close properly. Windows in perimeter walls likewise becomedifficult to open and close.

It is believed that there are three factors that contribute to frostheave. These factors are the soil being sufficiently saturated withwater, the atmospheric temperature, and the duration of the saturationand cold temperatures. Efforts to resist frost heave have been made.Typically in areas that experience significant frost heave, thefoundation must be engineered and extend below the frost line. Thisrequires excavation of an in-ground footing and installation of a rigidor engineered foundation such as concrete footers and pilings. In otherareas, skirting attaches around the perimeter of the manufactured home.The skirting extends from a lower edge of the manufactured home to theground. The skirting encloses the space between the ground and thebottom of the manufactured home. Skirting used on the perimeter ofmanufactured buildings placed at sites with pier supports is notentirely successful in reducing or eliminating frost heave. Even withskirting, manufactured buildings placed at sites with periphery piersupports and not having engineered foundations, are susceptible to frostheave of the ground below the ground pan or pad.

To provide foundations that resist the effects of frost heave,installers dig holes below the frost line and fill with concrete.Connecting members, embedded in concrete, connect to the manufacturedbuilding. However, digging foundation holes and pouring concretefoundations is time-consuming, costly and difficult, particularly duringperiods of freezing weather.

Accordingly, there is a need for a ground anchor to support manufacturedbuildings. It is to such that the present invention is directed.

BRIEF SUMMARY OF THE INVENTION

The present invention meets the need in the art by providing an anchorpier for supporting a manufactured building, comprising a shaft having aconnector at a first end and a driving tip at an opposing end with ahelical flight positioned proximate the driving tip, for driving througha surface of ground beneath a manufactured building to position theconnector proximate the surface, for interaction of the shaft and thehelical flight with the ground to communicate vertical loading betweenthe building and the ground. A brace member attaches at a first end tothe connector and at a second end to the manufactured building forvertically supporting the manufactured building relative to the ground,so vertical loading on the manufactured building transfers to the shaftand helical flight driven into the ground below the manufacturedbuilding.

In another aspect, the present invention provides a method of supportinga manufactured building, comprising the steps of:

(a) driving a shaft into a ground surface below a portion of amanufactured building, the shaft having a connector at a first end and adriving tip at an opposing end with a helical flight positionedproximate the driving tip; and

(b) attaching a first end of a brace member to the connector andattaching a second end of the brace member to the manufactured building,

whereby the plate in contact with the manufactured building transfersvertical loading on the manufactured building to the shaft and helicalflight into the ground below the manufactured building.

Objects, advantages, and features of the present invention will beapparent upon a reading of the detailed description together withobserving the drawings and reading the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates in side elevational view a manufactured building withan embodiment of an anchor pier according to the present inventionsupporting a perimeter portion of the manufactured building.

FIG. 2A illustrates in detailed side elevational view the anchor pierillustrated in FIG. 1 supporting a perimeter portion of the manufacturedbuilding.

FIG. 2B illustrates in exploded perspective view features of the anchorpier illustrated in FIG. 2A.

FIG. 3 illustrates in side elevational view a second embodiment of ananchor pier supporting a perimeter portion of a manufactured buildingand having a connecting member between the anchor pier and a supportbeam of the manufactured building.

FIG. 4A illustrates in side perspective view a third embodiment of ananchor pier in accordance with the present invention positioned fortransferring a load from the support beam of the manufactured buildingto the ground.

FIG. 4B illustrates in side view an alternate embodiment of the anchorpier illustrated in FIG. 4A.

FIG. 5 illustrates in side elevational view an alternate embodiment ofthe anchor pier illustrated in FIG. 1 further including a thermalisolator member for resisting frost heave of the ground in accordancewith the present invention.

FIG. 6 illustrates in side elevational view a fourth embodiment of ananchor pier in accordance with the present invention.

FIG. 7 illustrates in side elevational view a fifth embodiment of theanchor pier in accordance with the present invention.

FIG. 8A illustrates in side elevational view a sixth embodiment of theanchor pier in accordance with the present invention.

FIG. 8B illustrates in side elevational view a seventh embodiment of theanchor pier in accordance with the present invention.

FIG. 8C illustrates in side elevational view an alternate embodiment ofthe anchor shown in FIG. 8B.

FIG. 9 illustrates in side elevational view an eighth embodiment of theanchor pier in accordance with the present invention.

FIG. 10 illustrates in side elevational view a detailed view of theanchor pier illustrated in FIG. 9.

FIG. 11 illustrates in side elevational view a ninth embodiment of theanchor pier in accordance with the present invention.

FIG. 12 illustrates a perspective exploded view of the anchor pier shownin FIG. 11.

FIG. 13 illustrates an alternate embodiment of the anchor pierillustrated in. FIG. 12.

DETAILED DESCRIPTION

With reference to the drawings, in which like elements have likeidentifiers, FIG. 1 illustrates a portion of a manufactured building 10supported on a ground surface 11 by one or more long, longitudinalsupport beams 12. The support beams 12 conventionally are I-beams havinga central web with spaced-apart upper and lower forward and rearwardlaterally extending opposing flanges. The beams 12 underneath themanufactured building support the plurality of spaced-apart joists 13disposed transverse to the longitudinal axis of the support beams 12.The joists 13 support a floor 13 a of the manufactured building.

An embodiment of an anchor pier 14 in accordance with the presentinvention supports the manufactured building as a foundation. FIG. 1illustrates the anchor pier 14 supporting a perimeter portion 16 of themanufactured building that includes an upwardly extending sidewall 17.In an illustrative application, the anchor 14 is positioned to support awall portion having a doorway entrance and door conventionallypositioned in the wall. Piers 18 sit on footings, for example, onconcrete pads or poured columns, plastic pads, or steel members or pans.FIG. 1 illustrates a metal ground pan 20 and the pier 18 sits on theground pan and extends to the support beam 12 for transferring loadingfrom the manufactured building to the ground. It is to be appreciatedthat the present invention is also gainfully used with modular buildingsthat do not have frames but rather the foundation directly supports thefloor or the joists of the floor.

The anchor pier 14 includes a shaft 30 having a connector 32 at a firstend and a distal tip 34 at an opposing end. One or more helical threadmembers 36 attach in spaced-apart relation to the shaft 30 proximate thedistal tip 34. The connector 32 defies a U-shape with a base plate 38and a pair of opposing upstanding side walls 40. The side walls 40 eachdefine an opening aligned with the opening in the opposing side wall.

FIGS. 2A and 2B illustrate the anchor pier 14 in detailed side view anddetailed exploded perspective view, respectively. A T-member 42assembles in the connector 32. The T-member 42 assembles with a bolt 44and a tube member 45 having a threaded leg 46. The bolt 44 extendsthrough one of the openings in the side walls 40, through the tubemember 45 and through the opening in the opposing side wall. A nut 47threadingly engages the threaded end of the bolt 44 to secure the boltto the connector 32. The leg 46 extends from a medial portion of thetube member 45. The leg 46 is a threaded member welded to the tubemember 45. In the illustrated embodiment, the leg 46 extends at asubstantially perpendicular angle to a longitudinal axis of the tubemember 45. The leg 46 defines a threaded shaft 48 that receives athreaded nut 50. A distal portion of the threaded shaft 48 extendsinwardly though an open end 52 of a support or brace tube 54 (shown incut-away detail).

With continuing reference to FIG. 1, a skirting clip 55 (optional)attaches to the tube 54 (or other suitable portion of the anchor pier)for conventionally attaching to or receiving a connector of a skirting(not illustrated) that covers the opening between the ground 11 and thelower edge of the manufactured building. An angle plate 56 attaches atan opposing end of the brace tube 54. The plate has a base 58 and a sidewall 60 that defines an opening 61. The side wall 60 of the plate 56abuts a portion of the wall 17. A fastener 62, such as a threaded screwor a nail, extends through the opening 61 in the side wall 60 andengages a member such as the joist 13 to secure the brace tube 54 to themanufactured building 10.

FIG. 2A further illustrates an alternate embodiment that includes a cap64 that attaches to or nests with the connector 32. The cap 64 includesa base 66 and perimeter skirt 68 extending from the base 66. The base 66connects or attaches to the connector 32, and the skirt 68 extends in adirection towards the distal tip 34. The skirt 68 engages the ground 11when the anchor pier 14 is driven into the ground, to stabilize theshaft 30 and increase the holding capacity of the helical members 36 inthe ground.

It is to be appreciated that larger diameter helix members, multiplehelix members, longer length shafts, or combination can be used with theanchor pier of the present invention to achieve higher load holdingcapacity or for use in less dense soil or ground. The anchor pier andthe cap can be made of steel, plastic, or other suitable material. Thesupport or brace tube can be made from metal, plastic, or other suitablepipe, rods, or round or square tubing.

FIG. 3 illustrates in side elevational view a second embodiment of ananchor pier generally 70 supporting the perimeter portion 16 of themanufactured building 10. The anchor pier 70 comprises the structurediscussed above for the anchor pier 14 but the side walls 40 definesecond aligned opposing openings 72. A lateral brace generally 73connects between the connector 32 and the support beam 12. A boltextending through the openings 72 secures the lateral brace 73 to theconnector 32. In the illustrated embodiment, the lateral brace 73 is astrap 76. The strap connects to a split bolt 74 that extends through theopenings 72. A split bolt has a longitudinal slot extending through theshaft of the bolt from an end that receives a nut. An end portion of thestrap 76 extends into the slot of the split bolt until flush with theopposite side of the bolt. The bolt is then turned to wind the endportion of the strap around the bolt (such as 4 or 5 complete turns). Anut threaded on the end of the bolt tightens the bolt to the connector32. An opposing distal end 80 of the strap 76 connects with a frameclamp 77 to the support beam 12. Suitable frame clamps are disclosed inU.S. Pat. Nos. 6,928,783 and 6,418,685. An alternate embodiment uses atelescoping tubular brace to connect between the connector 32 and thesupport beam 12. U.S. Pat. No. 6,634,150 discloses a telescoping braceassembly and beam connector that can be used with the anchor pier 70instead of the strap 76. In this embodiment, an angle plate 82 seatsagainst a lower portion of the connector 70 during installation. Theplate 82, similarly to the cap 64, provides additional stabilizingsupport for the anchor pier. The plate 82 is positioned duringinstallation of the connector 70.

FIG. 4A illustrates in side perspective view a third embodiment of ananchor pier 90 in accordance with the present invention positioned fortransferring load (compression or tension) between the support beam 12of the manufactured building 10 and the ground. The anchor pier 90includes the connector 32 that engages a pair of opposing braces 94extending in opposing directions and towards the support beam 12 of themanufactured building. The braces 94 each define openings in respectiveend portions. The bolt 44 extends through one opening in the side wall40, through the opening in a first of the braces, through the opening inthe second of the braces, and through the opening in the opposing sidewall 40. The nut 47 (not illustrated in FIG. 4A) secures the braces 94to the connector 32. The pair of braces 94 thereby pivotably connects tothe connector 32.

The braces 94 also connect at a respective opposing end to a clampgenerally 95 attached to the support beam 12. U.S. Pat. No. 7,140,157discloses a suitable beam clamp 95 for connecting an upper end of thebrace 94 to the support beam 12. In an alternate embodiment (notillustrated), the connector 32 includes a pair of openings on each sidewall 40, and the braces 94 connect with separate bolts 44 extendingthrough a respective pair of openings on the opposing side walls.

In the illustrated embodiment, each brace 94 comprises a pair oftelescoping tubular members 96, 98 fastened at a selected length withthreaded fasteners 100. It is to be appreciated that in an alternateembodiment, a unitary tubular member is used.

The clamp 95 attaches to the support beam 12. The clamp 95 definesopenings for receiving a threaded pin 102, such as a bolt and nut. Anopposing end of the brace 94 defines opposing openings. The pin 102extends through the aligned openings in the connector 102 and the brace94 for pivotably connecting the brace 94 to the clamp 95, and thus tothe support beam 12.

FIG. 4B illustrates in side view an alternate embodiment of the anchorpier illustrated in FIG. 4A, to provide also both lateral andlongitudinal load resistance. A third brace 104 assembled withtelescoping tubular members extends between the connector 32 and alaterally spaced support beam 12 a. The brace 104 pivotably attaches ata lower end to the connector 32 with a bolt 44 as discussed above, whichbolt extends through second opposed openings in the side walls 40. Thebrace 104 pivotably attaches at an upper end to a beam connector 105attached to the beam. U.S. Pat. No. 6,634,150 describes a suitable beamconnector that generally includes a bracket and retaining means. Thebracket includes a traversing portion traversing an outer surface of aflange of second beam 12 a. The traversing portion includes a first endand a second end. The bracket includes a slot with a first side forbearing against an inner surface of the flange, a second side, which maybe part of traversing portion, for bearing on outer surface of theflange, and an end for bearing on a free end of the flange.

FIG. 5 illustrates in side elevational view an alternate embodiment ofan anchor pier 110 that further includes a thermally insulative member112 disposed between the connector 32 and the ground 11. The insulativemember 112 resists frost heave of the ground when stabilizing upwardlyagainst the manufactured building or the building needs additionalsupport members. The thermally insulative member 112 may be a foam sheetsuch as a STYROFOAM panel or sheet, or in an alternate embodiment, ametal plate to which a thermally insulative member or material attaches.For example, the thermally insulative member is defined by a spray-onthermal material which sticks or attaches to the plate. The thermallyinsulative member 112 provides a thermally insulative layer or coatingof between about ¼ inch to ½ inch, or other thickness suitable forrestricting thermal communication, as discussed below. In thisembodiment, the tip 34 of the shaft 30 is driven into the ground 11deeper than a frost line 114. The helix portion 36 of the below thefrost line 114 transfers the load from the manufactured building to theground, for use of the anchor as a pier.

The thermally insulative member 112 defines in situ a ground columngenerally 116 that is substantially coaxially aligned with shaft 30 anda thermally isolated ground column 118 proximate the connector 32. Theground column 116 below the frost line 114 communicates (generally 120)ground heat into the proximate thermally isolated ground column 118.

FIG. 6 illustrates a side elevational view of a fourth embodiment of ananchor pier 140 positioned for transferring load between themanufactured building 10 and the ground 11 by connecting to one of aplurality of joists 141 that support a floor 143 of the manufacturedbuilding. The anchor pier 140 includes the connector 32 with the shaft30 and helical members or flights 36 for embedding in the ground 11. Abolt 142 extends through openings in the opposing side walls 40 of theconnector 32. A brace generally 140 attaches to the connector 32 and tothe floor joist 141 of the manufactured building. In the illustratedembodiment, the brace 140 has a first tube 144 and a second tube 146which telescope together. The first tube 144 includes opposing holes ata first end. The bolt 142 extends through the holes to secure the lowerend of the first tube 144 to the connector 32. A plate 150 attaches toan end of the second tube 146. The free end of the first tube 144slidingly receives the free end of the second tube 146. Screws 152secure the plate 150 to a floor joist of the manufactured building. Afastener 154, such as a screw or a bolt, connects the first and secondtubes 146, 148 together. An alternate embodiment uses the T-member 42illustrated in FIGS. 2A and 2B with the connector 32. The threaded leg46 receives the open end of the lower tube 144. However, it is to beappreciated that the tubes 144, 146 with the bolt 142 may gainfully beuse with the embodiment illustrated in FIG. 5 for compression/tensionload support.

FIG. 7 illustrates in side elevational view a fifth embodiment of ananchor pier 160. In this embodiment, the connector 32 a includes threespaced openings in each side wall 40. The brace 140 illustrated in FIG.6 connects between the floor joist 141 and the connector 32 a of theanchor pier 160. The anchor pier 160 also includes a strap 162 thatattaches to the connector 32 with the split bolt 74 discussed above. Anopposing end 164 of the strap 162 attaches to the manufactured buildingor rim joist, such as with a clip 166 that secures with fasteners to theside wall or end of the floor joist or rim joist. The lateral brace 73(discussed above with reference to the embodiment illustrated in FIG. 3)connects to the connector 32 a and to the frame clamp 77 on the supportbeam 12.

FIG. 8A illustrates in side elevational view a sixth embodiment of ananchor pier 170. The anchor pier 170 includes a shaft 172 having a plate174 attached at a first end and a distal tip 176 at an opposing end.Helical members 178 attach in spaced-apart relation to the shaft nearthe distal tip 176. The anchor 170 is received in the ground 11 so thatthe plate 174 sits flush on the surface of the ground. A plurality ofblocks 180, such as conventional cement block, sit as a stack or pier onthe plate 174 beneath the support beam 12. Wood boards 182 or otherspacers position between the upper end of the pier and the lower surfaceof the support beam 12 to wedgingly contact the support beam with thepier.

FIG. 8B illustrates in side elevational view a seventh embodiment of ananchor pier 190. The anchor pier 190 includes a shaft 192 having aconnector member 194 at a first end and a distal tip 196 at an opposingend. Helical members 198 attach in spaced-apart relation to the shaft192. The connector member 194 attaches to the upper end of the shaft192. The connector member 194 defines an opening for a bolt 200. Theanchor pier 190 includes a plate member 202. A mating member 204attaches to the plate 202. The connector member 194 receives the member204. The bolt 200 extends through the aligned openings of the members194, 204, to rigidly connect the plate member to the anchor pier 190.The connector member 194 and the mating member 204 are made of tubes(such as a box tube or round tube), or channel members.

FIG. 8C illustrates an alternate embodiment of the anchor pier 190 a. Inthis embodiment, a sleeve 206 attaches to a lower surface of theconnector member 194, through which the shaft 192 extends. The sleeve206 provides additional lateral support to the anchor pier 190 when itis driven into the ground 11.

FIG. 9 illustrates in side elevational view an alternate embodiment 140a of the anchor pier 140 illustrated in FIG. 6. FIG. 10 illustrates inside elevational view a detailed view of the anchor pier illustrated inFIG. 9. In this embodiment, the second tube 146 does not include theplate 150. Rather, the free end of the tube 146 defines opposed openingsthat receive a bolt 212. The bolt 212 extends through openings definedin connectors 214 that connect to opposing free flanges of the I-beam12. Also, in this illustrated embodiment, the diameter of the secondtube 146 exceeds the diameter of the first tube 144. The second tube 146telescopingly receives an end portion of the first tube 144. Each tube144, 146 defines at least one pair of opposed openings for receiving athreaded fastener 216 such as a bolt. The fastener 216 secures the tubes144, 146 together. Further, opposing straps 76 (discussed above) extendbetween the connector 32 and the frame clamp 77. The anchor pier 140 atransfers loading between the ground and the manufactured building andthe straps 76 resist opposing longitudinal forces.

FIG. 11 illustrates in side elevational view a ninth embodiment of ananchor pier 220 in accordance with the present invention. FIG. 12illustrates the anchor pier 220 in a perspective exploded view. Withreference to FIG. 11, the anchor pier 220 is positioned at an outwardedge of the manufactured building 10 and spaced apart from the pier 18beneath the support beam 12. The anchor pier 220 transfers load betweenthe manufactured building 10 and the ground 11 by connecting to one of aplurality of joists 13 that support the floor 13 a of the manufacturedbuilding.

The anchor pier 220 includes the support tube 54 that couples with theconnector 32 through the T-member 42 and a connector 222 that attachesto a joist of the manufactured building 10. In this embodiment, the nut50 welds 221 to the lower end of the tube 54, as best illustrated inFIG. 12. The assembly of the tube 54 and the nut 50 then rotates ontothe threaded shaft 48 of the T-member 42 during installation at thesite.

The connector 32 includes the shaft 30 and helical members 36 farembedding in the ground 11. The connector 32 engages the T-member 42with the bolt 44 extending through the opening in one of the sidewalls40 in the Connector 32, though the tube member 45, and through theopening in the opposing sidewall 40. The nut 47 threads on the bolt 44and thus secures the T-member 42 to the connector 32. The threaded leg46 of the T-member 42 receives the assembly of the nut 50 and the tube54. A distal portion of the threaded shaft 48 extends inwardly thoughthe open end 52 of the support tube 54 as the nut 50 threads onto theshaft 48.

The support tube 54 attaches through a connector 222 to the joist 13.The connector 222 is an angle member with a side face 223 and top plate224 that defines a pair of spaced-apart openings 225. Fasteners 227extend through the openings 225 to attach the connector 222 to the joist13. A receiving member 226 attaches to the interior portion of the anglemember. The receiving member 226 is a length of tube sized to receive adistal end portion of the support tube 54. Fasteners 228 extend throughrespective opposed openings 230 (one is illustrated) in the receivingmember 226 to rigidly connect the support tube 54 to the connector 222.As best illustrated in FIG. 1, the connector 222 is disposed to positionthe side face 223 in alignment with a side of the manufactured building10. Skirting (not illustrated) that covers the opening between theground 11 and the lower edge of the manufactured building can attach tothe side face 223. The support tube 54 also can include the skirtingclip 55 (optional) for attaching skirting.

In the illustrated embodiment, the anchor pier 220 uses a 1 inch or 1and ¼ inch diameter, 42 inch long, 12 gauge round tube. The length canbe selected based on the particular installation site. The receivingmember 226 is a 1 and ¼ inch or 1 and ½ inch round tube, 11 gauge,having a length of 3 inches. The tube member 45 in the T-member 42 is a1 inch round tube having a length of 1 and ⅝ inches. The threaded member46 is 10 inches in length. The fastener 44 is a ⅝ inch by 2 and ¾ inchgrade 2 bolt using a ⅝ inch nut. The fasteners 227 are ⅜ inch lag screwshaving a 3 inch length. The fasteners 228 are ¼ inch—14 self-tappingscrews having a ¾ length. The connector 222 is an angle member of 0.120inch thickness. Depending on particular installation and engineeringrequirements, variations may be made.

In an alternate embodiment, the support tube 54 is a pair of telescopingmembers such as the members 96, 98 illustrated in FIG. 4B or the members146, 148 illustrated in FIG. 6. This alternate embodiment pins the lowerend of one of the members to the connector 32 with a fastener 142 anddoes not use the T-member 42. The other of the telescoping members isreceived by the receiving member 226 of the connector 222. Thetelescoping members adjust the overall length between the ground 11 andthe connector 222 during installation as discussed below. Fastenersrigidly connect the installed telescoping members together.

Another alternate embodiment does not use the nut 50/tube 54 assembly orthe T-member 42. In this embodiment, a fixed length member is used forthe support tube 54. The length is selected for being received in thereceiving member 226 during installation yet sufficient to extendbetween the connector 32 and the connector 222. A lower end of the fixedlength member defines opposing openings. The fastener 142 extendsthrough the side wall 40 of the connector 32, through the lower end ofthe fixed length member, and through the opposing side wall. thereceiving member 226 provides a gap between the upper edge of the memberinserted into the receiving member and the top plate 224 to facilitateinstallation. In this embodiment, the connector 222 receives the upperend of the fixed length member. The connector 222 is moved against thejoist 13 and attached to the joist with the fasteners 227. This movementdefines a gap between the upper edge of the fixed length member and thetop plate 224. The fasteners 228 secure the fixed length tube to thereceiving member 226.

FIG. 13 illustrates other alternate embodiment with an anchor pier 240having a support tube 242 that connects with the connector 32 to theground 11 and connects with a connector 244 to one of the support beams12. The connector 244 is similar to the connector 214 discussed abovebut includes a receiver member 246. The receiver member 246 attaches toone of the flange portions of the connector 213 such as by welding.Alternatively, a bolt extends between the flange portions of theconnector 244 and through openings in the receiver member 246. Thereceiver member 246 receives an end of the support tube 242. A fastener248 secures the support tube 242 to the receiver member 246. In theillustrated embodiment, a lower end of the support tube 242 definesopposing openings 250. The openings 250 receive the bolt 142 forsecuring the support tube to the connector 32. An alternate embodimenthowever uses the assembly of the nut 50 and support tube 54, that couplewith the T-member 42 to the connector 32 as discussed above.

The operation of the anchor pier for use in supporting manufacturedbuildings in various embodiments is discussed below. The anchor pierholds the manufactured building for both compression (building masspushing down on the anchor pier) forces between the building and theground and in some embodiments also tension forces in which the buildingtends to lift upwardly. The helical members of the connector (such asconnector 32) functions as a pier in supporting the manufacturedbuilding, and installed below a frost line resists frost heave forces.With reference to FIGS. 1 and 2, the anchor pier provides compression ordownward load support to perimeter portions 16 of manufactured buildings10. The anchor pier 14 is driven in to the ground 11 in alignment withthe exterior wall 17. This is accomplished with a power driver or leverfor rotating the shaft 30 to drive the tip 34 into the ground with thehelical thread member 36. The nut 50 threads on the leg 46. The bracetube 54 is aligned vertically with the leg 46 and the open end 52receives the threaded portion of the leg 42. The perimeter wall of thebrace tube 54 contacts the nut 50. The brace tube 54 is aligned so thatthe plate 56 is positioned with the side wall 60 outwardly of the wall17 of the perimeter portion 16 of the manufactured building. The nut 50is rotated on the threaded leg 46. This moves the brace tube 54vertically towards and into forcing contact with the lower surface ofthe joist on the exterior wall. The fastener 62 extends through theopening in the side wall 62 and into the end of the joist. The anchorpier 14 then transfers loading from the manufactured building to theground.

With reference to FIG. 3, the anchor pier 70 further provides forresisting lateral forces on the manufactured building by use of opposinginstalled pairs of anchor piers 70 positioned on opposing sides of themanufactured building. The lateral brace 73 connects between theconnector 32 and the support beam 12. In the embodiment using the straps76, the strap on the windward side resists lateral loading by windforces directed against the wall 17.

With reference to FIG. 4, the opposing braces 94 in the anchor pier 90resist longitudinal forces on the manufactured building while the anchorpier 90 communicates loading of the manufactured building to the ground.

With reference to FIG. 5, the anchor pier 110 according to the presentinvention reduces movement caused by frost heave arising from thefreezing and thawing of moisture-laden ground engaged by the shaft 30.The cap 60 or plate 82 provides additional load resistance and buildingsupport to the helical anchor that operates as a pier. The ground heatcommunicates 120 through and from the ground column 116 and into theproximate thermally isolated ground column 118. The thermally insulativemember 112 received on the shaft 30 caps the ground column and restrictsheat communication from the proximate thermally isolated ground column118 to and through the connector 32 to the atmosphere. The proximatethermally isolated ground column 118 retains ground heat, and theproximate ground thermally isolated column 118 experiences reducedfreezing occurrences (compared to nearby portions of the proximateground between the ground surface and the portion of the ground belowthe frost line 114). As a consequence, the occurrence of frost heave isreduced relative to the proximate thermally isolated ground column 118,and movement of the anchor pier is thereby reduced. The thermallyinsulative member 112 provides a high resistance to heat communication(generally referred to in the insulating trade as an R factor) over ananchor installation lacking the member. It is to be appreciated thethermally insulative member 112 may gainfully be used with the anchorpiers disclosed herein, including the anchor pier 14, 70, and 90.

With reference to FIG. 6, the anchor pier 140, with the helical member36 engaged in the ground 11, transfers load between the support beam 12of the manufactured building 10 to the ground 11. After drilling theshaft 30 into the ground, the bolt 142 secures the first tube 144 to theconnector 32 by extending through the opening in one side wall 40,through the opposing openings in the end of the tube 144, and throughthe opening in the opposing side wall 40. The tube 144 receives the tube146. The tube 146 is raised to position the plate 150 against the floorjoist and is secured thereto with the fasteners 152. The fastener 154connects the first and second tubes 144, 146 together. During use, theconnected tubes 144, 146 transfer vertical loading forces between themanufactured building and the ground 11.

The embodiment illustrated in FIG. 7 includes the brace 144 havingconnected tubes 144, 146for vertical loading. The strap 162 installs tothe connector 32 with the split bolt 74. After attaching the opposingend 164 of the strap 162 to the clip 166 attached to the manufacturedbuilding, the head of the split bolt 74 is rotated to tighten the strap.Upon tensioning of the strap, the split bolt is secured with a nut tohold the strap 162 in tension. The lateral brace 73 attaches between theconnector 32 and a lateral support beam 12 as discussed above withreference to the embodiment illustrated in FIG. 3. The strap 162 andbrace 73 provide additional longitudinal and/or lateral wind and/orseismic load resistance.

The anchor pier 170 shown in FIG. 8A provides vertical load support forthe manufactured building as a pier. The shaft 172 is driven into theground 11 to embed the helical member 178, until the plate 174 sitsflush on the surface of the ground. The blocks 180 stack as a pier andwood boards 182 or other spacers wedge firmly between the uppermostblock in the pier and the support beam 12. The anchor pier 170 transfersthe vertical load of the manufactured building to the ground 11.

The anchor pier 190 shown in FIG. 813 similarly supports a pier such astube members or blocks 180. The mating member 204 received in theconnector 194 also connects to the connector 194 with the bolt 200. Uponinstalling the pier (blocks 180 on the plate 202 with the wedge boards182 against the support beam 12 as illustrated in FIG. 8A), the anchorpier 190 transfers vertical loading from the manufactured building tothe ground 11.

FIG. 8C illustrates an alternate embodiment of the anchor pier 190. Thesleeve 206 provides additional lateral support to the anchor pier 190when it is driven into the ground 11.

FIG. 9 illustrates in side elevational view an alternate embodimentanchor pier 140 a of the anchor pier 140 illustrated in FIG. 6. FIG. 10illustrates a side view of the alternate embodiment anchor pier 140 a.In this embodiment, the second tube 146 connects with the bolt 212extending through the opposed openings and extends through openingsdefined in the connectors 214 that connect to opposing free flanges ofthe 1-beam 12. The fastener 216 secures the tubes 144, 146together. Theanchor pier 140 a transfers loading from the manufactured building tothe ground. The opposing straps 76 between the connector 32 and theframe clamp 77 resist opposing longitudinal forces.

The anchor pier 220 illustrated in FIGS. 11 and 12 provides load supportfor both downward loads imposed by the manufactured building 10 to theground as well as upload forces because the support tube 54 is fastenedthrough the connector 32 to the ground by the helix members 36 and isfastened to the manufactured building through the connector 222. Duringinstallation, the connector 32 is driving into the ground to fix thehelix member 36 in the ground. The T-member 42 is attached to theconnector 32 through the fastener 44 extending through the tube 45. Theassembly of the nut 50 and support tube 54 threadingly engages thethreaded shaft 48 of the leg 46. The distal end of the support tube 54inserts into the receiving member 226. The connector 222 is aligned withthe joist 13. The nut 50 is rotated, and this moves the connector 222towards the joist 13. The top plate 224 contacts the lower surface ofthe joist 13. The fasteners 227 extending through the openings 225secures the connector to the joist 13. The fasteners 228 extendingthrough respective opposed openings 230 rigidly connects the supporttube 54 to the connector 222.

After installation, the anchor pier 220 provides support of themanufactured building in response to loading caused by the building andby uplift forces. The anchor pier 220 transfers load between themanufactured building 10 and the ground 11 by the rigid connection ofthe support tube to the connector 32 and to the manufactured buildingthrough the connector 222.

The alternate embodiments of the anchor pier 220 likewise transfers load(downwardly and upwardly) through the rigidly connected telescopingmembers or the single member of a fixed length.

It is to be appreciated that that the anchor pier 220 may also use theadditional support provided by the cap 64 or by the plate 82 discussedabove. Installations at sites subject to freezing and frost heavegainfully employ the thermally insulative member 112 disposed betweenthe connector 32 and the ground 11 for defining in situ the groundcolumn 116 and the thermally isolated ground column 118 proximate theconnector 32, as illustrated in. FIG. 5, with the helical members 36disposed at depth below the frost line 114.

The anchor pier 240 illustrated in FIG. 13 also provides vertical loadsupport from the loading of the manufactured building as well as upliftloading experienced by manufactured buildings. The connector 32 driveninto the ground 11 connects with the bolt 142 to the support tube 242.The upper end of the support tube inserts into and attaches to thereceiver member 246 for connecting to the flanges of the support beam12. The alternate embodiment uses the assembly of the nut 50 and thesupport tube 54 to connect through the T-member to the connector 32. Theanchor pier 240 resists vertical loads in supporting the manufacturedbuilding 10. It is to be appreciated that telescoping members or a fixedlength member may be gainfully used with the anchor pier 240. Theinsulative member 112 can also be used for installations at sitessubject to freezing and frost heave. The support cap 64 or plate 82 canbe used with the anchor pier 240.

The present invention accordingly provides the anchor pier forsupporting perimeter and main support beams of manufactured buildingsand cooperatively with the thermally insulative member for defining theproximate thermally isolated ground column to cap communication ofground heat therefrom and thereby resist frost heave occurrencesproximate the anchor. While this invention has been described in detailwith particular references to illustrated embodiments thereof, it shouldbe understood that many modifications, additions and deletions, inadditions to those expressly recited, may be made thereto withoutdeparture from the spirit and scope of the invention.

1. An anchor pier for supporting a manufactured building, comprising: ashaft having a connector at a first end and a driving tip at an opposingend with at least one helical flight positioned proximate the drivingtip, for driving through a surface of ground vertically beneath anelongated longitudinally extending support beam of a manufacturedbuilding to position the connector proximate the surface, forinteraction of the shaft and the helical flight with the ground tocommunicate vertical loading between the manufactured building and theground; a brace member for attaching at a first end to the connector,the first end defining a pair of opposing openings therethrough, thebrace member extending vertically for engaging the support beam; areceiver that engages the longitudinally extending support beam of themanufactured building and engagingly receives an opposing second end ofthe brace member for vertically supporting the manufactured buildingrelative to the ground; the connector comprises: a U-shaped member witha base and two opposed upstanding side walls, each side wall defining anopening aligned with the opening in the opposing side wall; and afastener extending through the aligned openings of the side walls andthe brace member received thereon for attaching the first end of thebrace member to the connector, whereby vertical loading on themanufactured building transfers through the receiver, the brace memberand the connector to the shaft and the helical flight driven into theground below the manufactured building. 2.-8. (canceled)
 9. The anchorpier as recited in claim 1, further comprising a thermally insulativemember disposed adjacent the connector, whereby the connector and thethermally insulative member define in situ a proximate thermallyisolated ground column thereunder and the thermally insulative memberrestricts communication of heat from the proximate thermally isolatedground column for resisting frost heaving.
 10. The anchor pier asrecited in claim 9, wherein the thermally insulative member is definedby a planar sheet of an insulating material.
 11. The anchor pier asrecited in claim 9, wherein the thermally insulative member is definedby a spray insulating foam.
 12. The anchor pier as recited in claim 1,wherein the brace member comprises a pair of tubular members thattelescope together to a selected length for being disposed between theconnector and the support beam of the manufactured building.
 13. Theanchor pier as recited in claim 1, further comprising a secondarysupport member positioned against the shaft and the connector.
 14. Theanchor pier as recited in claim 13, wherein the secondary support membercomprises a cap having a plate that seats against the connector anddefines an opening for passage of the shaft, the cap having a skirtextending from the perimeter of the cap in a direction substantiallyparallel to the shaft towards the driving tip.
 15. The anchor pier asrecited in claim 13, wherein the secondary support member comprises anL-shaped plate having a first leg that seats against the connector and asecond planar leg that seats against the shaft during installation ofthe shaft and helical flight in the ground for positioning the first legin contact with a surface of the ground and the second leg receivedwithin the ground.
 16. The anchor pier as recited in claim 1, furthercomprising a flange connector that attaches to the support beam of themanufactured building, the flange connector attached to the receivingmember for receiving the second end of the brace member.
 17. A method ofsupporting a manufactured building, comprising the steps of: (a) drivinga shaft of an anchor into a ground surface vertically beneath alongitudinally extending support beam of a manufactured building, theshaft having a connector at a first end and having a driving tip at anopposing end with a helical flight positioned proximate the driving tip,the connector comprising a U-shaped member having a base and opposingside walls that define aligned openings therein; (b) attaching with afastener a respective first end of a brace member to the connector, thebrace member defining opposing openings through the first end foralignment with the openings in the side wall, the brace member extendingvertically therefrom; and (c) a respective second end of the bracemember into a receiving member attached to the support beam of themanufactured building, whereby the brace member being connected to thesupport beam transfers loading on the manufactured building to theground through the anchor in the ground below the manufactured building.18.-20. (canceled)
 21. The method as recited in claim 17, furthercomprising the step of attaching a flange connector to the support beamof the manufactured building, the flange connector including thereceiver for receiving the second end of the brace member.
 22. Themethod as recited in claim 17, further comprising the step of disposinga thermally insulative member on the shaft adjacent the connector,whereby the thermally insulative member defines in situ a proximatethermally isolated ground column thereunder, which thermally insulativemember restricts communication of heat from the proximate thermallyisolated ground column for resisting frost heaving.
 23. (canceled) 24.The method as recited in claim 17, further comprising the step ofpositioning a secondary support member relative to the connector tosupport the shaft and the helical flight in the ground.
 25. (canceled)26. The method as recited in claim 17, further comprising the step ofpositioning a secondary support member relative to the connector tosupport the shaft and the helical flight in the ground, the secondarysupport member comprising an L-shaped plate with a first leg of theL-shaped plate seating against the connector and a second planar leg ofthe L-shaped plate placed against the shaft whereby driving the shaftand helical flight into the ground, moves the first leg into contactwith the surface of the ground and the second leg received in theground.
 27. The method as recited in claim 17, wherein the shaft issized so that the helical member is disposed below a frost line of theground below the manufactured building.
 28. (canceled)
 29. The anchorpier as recited in claim 1, further comprising a flange connector thatattaches to the support beam and attaches to the receiver, forconnecting the brace member in bearing engagement to the support beam.30. The anchor pier as recited in claim 1, wherein the fastenercomprises a bolt threaded at one end and a nut for threadingly engagingthe bolt.